Average annual temperature is 27.4 °C
Absolute maximum temperature: 39.3 °C
Absolute minimum temperature: 19.7 °C
Number of sunny days: 89 days
Number of rainy days: 276 days
Look at detailed online map of Ariyamadu
* Weather data for Ariyamadu Sri Lanka is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 28.8 | 30.5 | 35.3 | 37.5 | 37.3 | 38.6 | 38.7 | 39.3 | 36.0 | 34.8 | 31.1 | 31.8 |
| Average daytime temperature (°C) | 27.7 | 29.0 | 31.8 | 34.3 | 33.6 | 35.5 | 35.6 | 36.6 | 34.2 | 32.2 | 29.3 | 28.6 |
| Average temperature (°C) | 24.3 | 25.0 | 26.9 | 28.3 | 28.5 | 30.0 | 29.8 | 29.6 | 28.5 | 26.8 | 25.6 | 25.6 |
| Average night temperature (°C) | 21.7 | 22.2 | 23.6 | 24.5 | 25.4 | 26.5 | 26.3 | 25.6 | 25.2 | 24.0 | 23.3 | 23.6 |
| Absolute minimum temperature (°C) | 19.7 | 20.3 | 22.7 | 23.3 | 23.3 | 25.4 | 25.5 | 24.6 | 24.2 | 23.3 | 22.7 | 23.1 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 11.0 | 11.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 |
| Daylight mean duration (h) | 11.7 | 11.8 | 12.1 | 12.3 | 12.5 | 12.6 | 12.6 | 12.4 | 12.2 | 11.9 | 11.7 | 11.6 |
| Daylight minimum duration (h) | 11.0 | 11.0 | 11.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 |
| Sunshine mean duration (h) | 9.3 | 10.2 | 10.9 | 10.5 | 9.0 | 10.5 | 9.6 | 10.8 | 10.0 | 9.3 | 7.0 | 7.1 |
| Precipitation (mm) | 110 | 96 | 52 | 104 | 129 | 20 | 31 | 80 | 81 | 324 | 474 | 341 |
| Sunny days | 15 | 13 | 9 | 9 | 5 | 10 | 12 | 13 | 1 | 1 | 0 | 1 |
| Rainy days | 16 | 15 | 22 | 21 | 26 | 20 | 19 | 18 | 29 | 30 | 30 | 30 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Ariyamadu is at